<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script type="text/javascript" src="jq/jquery-1.11.1.js"></script>
<script type="text/javascript">
$(function(){
	$("#btn").click(function(){
		if($.trim($("#userName").val())==""){
			$("#userName").select();
			$("#userName").focus();
			$("#msg").html("用户名不能为空，请输入！");
			return;
		};
		if($.trim($("#pwd").val())==""){
			$("#pwd").select();
			$("#pwd").focus();
			$("#msg").html("密码不能为空，请输入");
			return;
		};
		$.post("user.do?op=checkLogin",
		{userName:$("#useName").val(),pwd:$("#pwd").val()},function(data){
			if(data=="1"){
				location.href("main.jsp");
			}else{
				$("#msg").html("用户名或密码错误,请重新输入");	
			}
			
		});
	});	
});
</script>

</head>
<body>
登录页面<br/><br/>
<form action="" method="post">
<table width="247">
  <tr>
    <td width="60">用户名</td>
    <td width="171">
      <input type="text" name="userName" id="userName">
    </td>
  </tr>
  <tr>
    <td>密码</td>
    <td>
      <input type="password" name="pwd" id="pwd">
    </td>
  </tr>
  <tr>
    <td colspan="2"><input type="button" id="btn" value="提交"></td>
  </tr>
</table>
</form>
<div id="msg"></div>
<br/>
<a href="main.jsp">返回主页面</a>

</body>
</html>